If a single board measures 1/12 of a meter then it would take 12 boards to make a meter. Since, the stack is 2 meters high. You would multiply 12 and 2 to get 24. There is 24 boards in the stack.
Given:
The function is:

To find:
The value of
.
Solution:
We have,

Putting
, we get



On combining like terms, we get


Therefore, the required function is
.
the correct answer to question 1 is 1/8
Answer:

Step-by-step explanation:
We are given the function:

and asked to find f(5). Therefore, we must substitute 5 in for each
.

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.
Multiply 18 and 5.

Add 90 and 11.

f(5) is equal to 101.